/* IMMORTAL palette: the same tokens as apply-site/public/theme.css (kept in sync by hand, this is a separate project). */
:root {
  --bg: #07060b; --surface: #0e0c16; --surface-2: #15121f; --panel: rgba(16, 13, 25, .88); --field: #0a0910;
  --line: #231d33; --line-strong: #3a2c62; --text: #f4f2fa; --text-2: #d3cde3; --muted: #958fab; --faint: #6c6684;
  --accent: #7a22ff; --accent-hi: #9046ff; --accent-deep: #5b10d8; --accent-soft: #b897ff;
  --ok: #2fe0a0; --warn: var(--warn); --danger: #ff5a7a;
  --mono: ui-monospace, "Cascadia Code", Consolas, monospace;
}
* { box-sizing: border-box; }
html { color-scheme: dark; }
body { margin: 0; color: var(--text); font: 16px/1.65 system-ui, -apple-system, "Segoe UI Variable Text", "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1100px 480px at 50% -16%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%), var(--bg);
  background-attachment: fixed; }
::selection { background: color-mix(in srgb, var(--accent) 55%, transparent); color: #fff; }
a { color: var(--accent-soft); text-underline-offset: 3px; }
main { max-width: 820px; margin: 0 auto; padding: 24px 16px 64px; }

.top { position: sticky; top: 0; z-index: 5; padding: 12px 16px; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(10px); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 800; letter-spacing: .14em; text-transform: uppercase; font-size: 14.5px; text-decoration: none; }
.brand img { filter: drop-shadow(0 0 12px color-mix(in srgb, var(--accent) 45%, transparent)); }
footer { max-width: 820px; margin: 0 auto; padding: 24px 16px 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }

h1 { font-size: clamp(26px, 5vw, 34px); line-height: 1.2; margin: 8px 0 10px; }
h2 { margin: 36px 0 10px; font-size: 22px; }
h3 { margin: 26px 0 8px; font-size: 18px; }
.anchor { margin-left: -1em; padding-right: .3em; color: var(--line); text-decoration: none; opacity: 0; }
h2:hover .anchor, h3:hover .anchor { opacity: 1; }
.lede { color: var(--text-2); font-size: 18px; margin: 0 0 8px; }
.meta { color: var(--muted); font-size: 13px; }
.crumbs { font-size: 14px; color: var(--muted); }
.crumbs a { color: var(--muted); }
.empty { color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; margin-top: 20px; }
.card { display: block; padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(180deg, rgba(255, 255, 255, .03), transparent 90px), var(--panel);
  color: var(--text); text-decoration: none; transition: border-color .2s, transform .2s, box-shadow .2s; }
.card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 12px 40px -18px var(--accent); }
.card h3 { margin: 0 0 6px; font-size: 17px; }
.card p { margin: 0 0 8px; color: var(--text-2); font-size: 14.5px; }

.toc { display: grid; gap: 4px; margin: 18px 0; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--field); font-size: 14.5px; }
.toc b { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.toc a { text-decoration: none; }
.toc .d3 { padding-left: 14px; }

.guide img { display: block; max-width: 100%; height: auto; margin: 12px 0; border: 1px solid var(--line); border-radius: 10px; }
.guide li + li { margin-top: 4px; }
code { padding: 1px 6px; border-radius: 6px; background: var(--field); border: 1px solid var(--line); font: 14px var(--mono); }
pre { overflow-x: auto; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--field); }
pre code { padding: 0; border: 0; background: none; }
table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 15px; display: block; overflow-x: auto; }
th, td { padding: 8px 12px; border: 1px solid var(--line); text-align: left; }
th { background: var(--field); }
blockquote { margin: 14px 0; padding: 4px 16px; border-left: 3px solid var(--line-strong); color: var(--text-2); }
.callout { margin: 16px 0; padding: 4px 16px; border: 1px solid var(--line); border-left: 4px solid var(--accent-soft); border-radius: 10px; background: color-mix(in srgb, var(--accent) 8%, transparent); }
.callout.tip { border-left-color: var(--ok); background: color-mix(in srgb, var(--ok) 6%, transparent); }
.callout.warning { border-left-color: var(--warn); background: color-mix(in srgb, var(--warn) 7%, transparent); }