:root{
  --bg: #ffffff;
  --panel: #ffffff;
  --panel2: #f3f6fa;
  --text: #0b1220;
  --muted: #334155;

  --border: rgba(15,23,42,.14);
  --border2: rgba(15,23,42,.22);
  --shadow: 0 10px 28px rgba(15,23,42,.12);

  --link: #005bd1;
  --linkHover: #0048a8;

  --accent: #1f6feb;
  --accent2: #7c3aed;

  --codeBg: #0b1220;
  --codeText: #e6edf3;
  --codeBorder: rgba(15,23,42,.18);

  --g1: rgba(31,111,235,.12);
  --g2: rgba(124,58,237,.10);
  --g3: rgba(14,165,233,.07);

  --radius: 14px;
  --max: 1240px;
  --tocW: 260px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

@media (prefers-color-scheme: dark){
  :root{
    --bg: #070b14;
    --panel: #0f172a;
    --panel2: #0b1324;
    --text: #eef2f7;
    --muted: #c1cbe0;

    --border: rgba(255,255,255,.12);
    --border2: rgba(255,255,255,.18);
    --shadow: 0 12px 34px rgba(0,0,0,.45);

    --link: #7db6ff;
    --linkHover: #a8d1ff;

    --accent: #79c0ff;
    --accent2: #c4b5fd;

    --codeBg: #050a14;
    --codeText: #eef2f7;
    --codeBorder: rgba(255,255,255,.14);

    --g1: rgba(121,192,255,.12);
    --g2: rgba(196,181,253,.09);
    --g3: rgba(34,211,238,.07);
  }
}

*{ box-sizing: border-box; }
html,body{ height:100%; }

body{
  margin:0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16.5px;
  position: relative;
  z-index: 0;
}

body::before{
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(900px 520px at 18% -12%, var(--g1), transparent 62%),
    radial-gradient(820px 540px at 92% 0%,  var(--g2), transparent 60%),
    radial-gradient(980px 760px at 52% 115%, var(--g3), transparent 62%);
  background-repeat: no-repeat;
}

/* Hide stray markdown horizontal rules (often caused by a line with '---') */
hr{ display: none; }

a{ color: var(--link); text-decoration: none; }
a:hover{ color: var(--linkHover); text-decoration: underline; }

.topbar{
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in oklab, var(--bg) 94%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.topbarInner{
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 16px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  font-weight: 750;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.brandMark{
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 14%, transparent);
}

.nav{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items:center;
  justify-content: flex-end;
}

.nav a{
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid transparent;
  color: var(--text);
  opacity: .95;
  text-decoration: none;
}

.nav a:hover{
  border-color: var(--border2);
  background: color-mix(in oklab, var(--panel) 86%, transparent);
  text-decoration: none;
  opacity: 1;
}

.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 16px 70px;
}

.headerCard{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  margin-bottom: 14px;
}

.kicker{
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 12.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.h1{
  margin: 0 0 8px;
  font-size: 34px;
  letter-spacing: -0.02em;
  line-height: 1.18;
  font-weight: 780;
}

.sub{
  margin: 0;
  color: var(--muted);
  max-width: 105ch;
}

.layout{
  display:grid;
  grid-template-columns: var(--tocW) 1fr;
  gap: 14px;
  align-items: start;
}

@media (max-width: 1000px){
  .layout{ grid-template-columns: 1fr; }
}

.toc{
  position: sticky;
  top: 74px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  min-width: 0;
}

@media (max-width: 1000px){
  .toc{ position: static; }
}

.tocTitle{
  font-weight: 750;
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--text);
}

.tocSection{
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.tocItem{
  display:block;
  padding: 9px 10px;
  border-radius: 10px;
  border: 1px solid var(--border2);
  background: color-mix(in oklab, var(--panel2) 92%, transparent);
  color: var(--text);
  margin-bottom: 8px;
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tocItem:hover{
  background: color-mix(in oklab, var(--panel2) 80%, transparent);
  border-color: color-mix(in oklab, var(--accent) 35%, var(--border2));
  text-decoration: none;
}

.tocItemSub{
  margin-left: 10px;
  font-size: 13px;
}

.content{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 24px;
  min-width: 0;
}

h1,h2,h3,h4{
  line-height: 1.26;
  letter-spacing: -0.01em;
  scroll-margin-top: 92px;
  color: var(--text);
}
h1{ font-size: 32px; margin: 10px 0 12px; font-weight: 780; }
h2{
  font-size: 24px;
  margin: 28px 0 12px;
  font-weight: 740;
  padding: 6px 0 6px 12px;
  border-left: 4px solid color-mix(in oklab, var(--accent) 80%, transparent);
  background: linear-gradient(90deg, color-mix(in oklab, var(--accent) 10%, transparent), transparent 70%);
  border-radius: 10px;
}
h3{ font-size: 20px; margin: 22px 0 10px; font-weight: 680; }
h4{ font-size: 16.5px; margin: 18px 0 8px; font-weight: 640; color: color-mix(in oklab, var(--text) 92%, var(--muted)); }

p{ margin: 10px 0; }
ul,ol{ padding-left: 22px; }
li{ margin: 6px 0; }

blockquote{
  margin: 14px 0;
  padding: 12px 14px;
  border-left: 4px solid color-mix(in oklab, var(--accent2) 70%, transparent);
  background: color-mix(in oklab, var(--panel2) 86%, transparent);
  border-radius: 12px;
  color: var(--muted);
}

code{ font-family: var(--mono); font-size: 0.95em; }
p code, li code{
  padding: 2px 6px;
  border: 1px solid var(--border2);
  border-radius: 8px;
  background: color-mix(in oklab, var(--panel2) 92%, transparent);
}

pre{
  margin: 14px 0;
  padding: 12px 14px;
  overflow: auto;
  background: var(--codeBg);
  color: var(--codeText);
  border: 1px solid var(--codeBorder);
  border-radius: 12px;
}
pre code{ padding: 0; background: transparent; border: none; color: inherit; }

/* Permalinks */
.hlink{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-left: 10px;
  border-radius: 8px;
  border: 1px solid transparent;
  opacity: 0;
  transform: translateY(-1px);
  text-decoration: none;
  color: color-mix(in oklab, var(--text) 72%, var(--muted));
}
h2:hover .hlink, h3:hover .hlink, h4:hover .hlink{ opacity: .95; }
.hlink:hover{
  border-color: var(--border2);
  background: color-mix(in oklab, var(--panel2) 90%, transparent);
  text-decoration: none;
  color: var(--text);
}
.hlink svg{ width: 14px; height: 14px; fill: currentColor; }

/* Index page: guide tiles */
.guidesIndexLinks{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 10px;
  margin: 14px 0 6px;
  padding: 0;
  list-style: none;
}
.guidesIndexLinks li{ margin: 0; }
a.guideTile{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--border2);
  background: color-mix(in oklab, var(--panel2) 92%, transparent);
  color: var(--text);
  text-decoration: none;
}
a.guideTile:hover{
  border-color: color-mix(in oklab, var(--accent) 35%, var(--border2));
  background: color-mix(in oklab, var(--panel2) 80%, transparent);
  text-decoration: none;
}
a.guideTile .tileMeta{
  display:flex;
  flex-direction: column;
  min-width: 0;
}
a.guideTile .tileTitle{
  font-weight: 720;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
a.guideTile .tileHint{
  color: var(--muted);
  font-size: 12.5px;
}
a.guideTile .tileArrow{
  opacity: .85;
  flex: 0 0 auto;
}

.pager{
  display:flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.pager a{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border2);
  background: color-mix(in oklab, var(--panel2) 92%, transparent);
  color: var(--text);
  max-width: 48%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pager a:hover{
  border-color: color-mix(in oklab, var(--accent) 35%, var(--border2));
  background: color-mix(in oklab, var(--panel2) 80%, transparent);
  text-decoration: none;
}

.foot{
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
}