:root {
  --bg: #07090e;
  --bg-2: #0c111a;
  --panel: rgba(16, 22, 34, 0.72);
  --line: rgba(140, 170, 210, 0.14);
  --text: #e8eef8;
  --muted: #8b97ab;
  --cyan: #5ce1d8;
  --gold: #e8c37a;
  --violet: #9b8cff;
  --rose: #ff7a9a;
  --ok: #7dffb3;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 18px;
  --font: "Noto Sans SC", "Space Grotesk", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --display: "Space Grotesk", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button, input { font-family: inherit; }

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.orb {
  pointer-events: none;
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  z-index: 0;
}
.orb-a { width: 420px; height: 420px; background: rgba(92, 225, 216, 0.16); top: -120px; left: -80px; }
.orb-b { width: 520px; height: 520px; background: rgba(155, 140, 255, 0.12); right: -160px; bottom: -180px; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 240px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 14px 22px;
  backdrop-filter: blur(18px);
  background: rgba(7, 9, 14, 0.72);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  color: #061018;
  font-weight: 900;
  font-family: var(--display);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-family: var(--display); letter-spacing: 0.02em; }
.brand-text small { color: var(--muted); font-size: 12px; }

.search-wrap { position: relative; }
.search-wrap input {
  width: 100%;
  height: 44px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  border-radius: 999px;
  padding: 0 48px 0 18px;
  outline: none;
}
.search-wrap input:focus { border-color: rgba(92, 225, 216, 0.5); box-shadow: 0 0 0 4px rgba(92,225,216,0.08); }
.search-wrap kbd {
  position: absolute; right: 12px; top: 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 2px 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
}

.top-links { display: flex; gap: 18px; color: var(--muted); font-size: 14px; }
.top-links a:hover { color: var(--cyan); }

.rail {
  position: fixed;
  top: 73px;
  left: 0;
  bottom: 0;
  width: 240px;
  padding: 18px 12px;
  border-right: 1px solid var(--line);
  overflow: auto;
  z-index: 10;
  background: rgba(7,9,14,0.45);
  backdrop-filter: blur(10px);
}

.rail h4 {
  margin: 18px 10px 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}
.rail a, .rail button {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  color: var(--text);
  padding: 9px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 13.5px;
}
.rail a:hover, .rail button:hover, .rail a.active {
  background: rgba(92, 225, 216, 0.08);
  color: var(--cyan);
}

#app {
  position: relative;
  z-index: 1;
  margin-left: 240px;
  padding: 28px 36px 80px;
  min-height: calc(100vh - 73px);
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: stretch;
  margin-bottom: 28px;
}

.glass {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-copy { padding: 36px; }
.kicker {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hero h1 {
  font-family: var(--display);
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.08;
  margin: 12px 0 14px;
  letter-spacing: -0.03em;
}
.hero h1 span { color: var(--gold); }
.lead { color: #c5cedd; font-size: 16px; max-width: 640px; }
.cta-row { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 11px 18px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}
.btn-primary { background: linear-gradient(135deg, var(--cyan), #7aa7ff); color: #061018; border: 0; font-weight: 700; }

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding: 22px;
}
.stat {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255,255,255,0.02);
}
.stat b { display: block; font-size: 28px; font-family: var(--display); }
.stat span { color: var(--muted); font-size: 13px; }

.grid { display: grid; gap: 16px; }
.tracks { grid-template-columns: repeat(3, 1fr); }
.card {
  padding: 20px;
  min-height: 150px;
  position: relative;
  overflow: hidden;
  transition: transform .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-3px); border-color: rgba(92,225,216,0.35); }
.card .icon {
  width: 36px; height: 36px; border-radius: 10px;
  display: grid; place-items: center;
  background: rgba(92,225,216,0.12);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 13px;
  margin-bottom: 12px;
}
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 13.5px; }
.meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.chip {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin: 28px 0 14px;
}
.section-title h2 { margin: 0; font-family: var(--display); font-size: 24px; }
.section-title p { margin: 0; color: var(--muted); font-size: 13px; }

.article { max-width: 880px; }
.crumbs { color: var(--muted); font-size: 13px; margin-bottom: 10px; }
.article h1 { font-family: var(--display); font-size: 36px; line-height: 1.2; margin: 0 0 10px; }
.article .intro { color: #c9d3e2; font-size: 17px; }
.prose h2 { margin-top: 28px; font-size: 22px; }
.prose h3 { margin-top: 20px; font-size: 17px; color: var(--gold); }
.prose p, .prose li { color: #d5dce8; }
.prose ul { padding-left: 18px; }
.prose code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: rgba(255,255,255,0.05);
  padding: 1px 6px;
  border-radius: 6px;
}
.callout {
  margin: 18px 0;
  padding: 14px 16px;
  border-left: 3px solid var(--gold);
  background: rgba(232, 195, 122, 0.08);
  border-radius: 0 12px 12px 0;
  color: #efe4c8;
}
.callout.warn { border-left-color: var(--rose); background: rgba(255,122,154,0.08); color: #ffd5df; }
.callout.ok { border-left-color: var(--ok); background: rgba(125,255,179,0.08); color: #d7ffe8; }

.related { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 28px; }
.related a { padding: 16px; }
.related small { color: var(--muted); }

.map-wrap { height: 560px; padding: 0; overflow: hidden; position: relative; }
svg.map { width: 100%; height: 100%; display: block; }
.node-label { font-size: 11px; fill: #dbe6f5; font-family: var(--font); }

.list { display: grid; gap: 10px; }
.row {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
}
.row .lvl { font-family: var(--mono); font-size: 12px; color: var(--cyan); }

.suggest {
  position: fixed;
  top: 68px;
  left: 262px;
  right: 180px;
  z-index: 30;
  max-height: 420px;
  overflow: auto;
  padding: 8px;
}
.suggest a { display: block; padding: 10px 12px; border-radius: 10px; }
.suggest a:hover { background: rgba(255,255,255,0.05); }
.suggest b { color: var(--cyan); }
.hidden { display: none; }

.footer-note { margin-top: 40px; color: var(--muted); font-size: 12px; }

@media (max-width: 980px) {
  .topbar { grid-template-columns: 1fr; }
  .rail { display: none; }
  #app { margin-left: 0; padding: 18px; }
  .hero, .tracks, .related, .stats { grid-template-columns: 1fr; }
  .suggest { left: 16px; right: 16px; }
}