:root {
  --bg: #0c1222;
  --surface: rgba(255,255,255,0.045);
  --border: rgba(255,255,255,0.1);
  --text: #e8eef7;
  --muted: #93a4bd;
  --accent: #f0a36a;
  --accent2: #7eb6ff;
  --accent3: #6ed3a1;
  --warn: #e8b86d;
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, "Songti SC", serif;
  --font-body: "Avenir Next", "PingFang SC", "Helvetica Neue", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  font-family: var(--font-body);
  background:
    radial-gradient(900px 500px at 12% -10%, rgba(240,163,106,0.14), transparent 55%),
    radial-gradient(700px 420px at 90% 0%, rgba(126,182,255,0.10), transparent 50%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.65;
}
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 980px; margin: 0 auto; padding: 28px 20px 80px; }
nav.top {
  display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center;
  padding: 14px 0 22px; border-bottom: 1px solid var(--border); margin-bottom: 28px;
}
nav.top .brand {
  font-family: var(--font-display);
  font-size: 1.15rem; font-weight: 700; color: var(--text); margin-right: auto;
}
nav.top a { color: var(--muted); font-size: 0.9rem; }
nav.top a.active { color: var(--accent); }
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.5vw, 2.7rem);
  letter-spacing: -0.02em; line-height: 1.15; margin-bottom: 12px;
}
.hero p { color: var(--muted); max-width: 42rem; }
.grid4 {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 28px 0;
}
@media (max-width: 820px) { .grid4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .grid4 { grid-template-columns: 1fr; } }
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px 16px; display: block; color: inherit;
}
a.card:hover { border-color: rgba(240,163,106,0.45); text-decoration: none; }
.card .kicker { font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); font-weight: 700; }
.card h2, .card h3 { font-size: 1.1rem; margin: 8px 0 6px; font-family: var(--font-display); }
.card p { color: var(--muted); font-size: 0.88rem; }
.path {
  background: linear-gradient(135deg, rgba(240,163,106,0.12), rgba(126,182,255,0.08));
  border: 1px solid var(--border); border-radius: 16px; padding: 22px 20px; margin-top: 8px;
}
.path h2 { font-family: var(--font-display); font-size: 1.35rem; margin-bottom: 8px; }
.path ol { margin: 12px 0 0 1.2rem; color: var(--muted); }
.path li { margin: 8px 0; }
.path strong { color: var(--text); }
.search {
  width: 100%; margin: 8px 0 18px; padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: rgba(0,0,0,0.25); color: var(--text);
  font-size: 1rem;
}
.meta { color: var(--muted); font-size: 0.85rem; margin-bottom: 16px; }
.tag {
  display: inline-block; font-size: 0.72rem; padding: 2px 8px; border-radius: 999px;
  background: rgba(126,182,255,0.12); color: var(--accent2); margin: 0 4px 4px 0;
}
.tag.purpose { background: rgba(240,163,106,0.15); color: var(--accent); }
.practice {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px; margin: 14px 0;
}
.practice h3 { font-family: var(--font-display); font-size: 1.15rem; margin-bottom: 8px; }
.quote {
  border-left: 3px solid var(--accent);
  padding: 8px 12px; margin: 10px 0; color: var(--text);
  background: rgba(0,0,0,0.2); border-radius: 0 8px 8px 0;
}
.row { margin: 8px 0; color: var(--muted); font-size: 0.92rem; }
.row b { color: var(--text); }
.group-title {
  font-family: var(--font-display); font-size: 1.25rem;
  margin: 28px 0 10px; padding-top: 8px; border-top: 1px solid var(--border);
}
.prose h1, .prose h2, .prose h3 { font-family: var(--font-display); margin: 1.2em 0 0.5em; }
.prose p, .prose li { color: var(--muted); margin: 0.55em 0; }
.prose strong { color: var(--text); }
.prose blockquote {
  border-left: 3px solid var(--accent); padding: 8px 14px; margin: 14px 0;
  color: var(--text); background: rgba(0,0,0,0.2); border-radius: 0 8px 8px 0;
}
.prose table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 0.9rem; }
.prose th, .prose td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
.prose th { color: var(--muted); }
.prose code, .code code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.85em;
}
.prose pre.code, pre.code {
  background: rgba(0,0,0,0.35); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px 14px; overflow-x: auto; margin: 12px 0;
  color: #d7e3f4;
}
.scene-nav { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0 8px; }
.scene-nav a {
  border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px;
  color: var(--muted); font-size: 0.85rem;
}
.scene-nav a.active { color: var(--accent); border-color: rgba(240,163,106,0.5); }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.82rem; }
details.drill {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 14px; margin: 10px 0;
}
details.drill summary { cursor: pointer; color: var(--accent); font-weight: 600; }