:root{
  --bg:#000000;
  --panel:#0a0a0a;
  --panel-soft:#111111;
  --ink:#f2f2f2;
  --muted:#a0a0a0;
  --brand:#c6a7ff;
  --brand-ink:#0a0a0a;
  --ring:rgba(198,167,255,.38);
  --border:rgba(255,255,255,.08);
  --shadow:0 24px 60px rgba(0,0,0,.28);
}

html, body {
  height:100%;
}

html {
  scroll-behavior:smooth;
}

body {
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:400 16px/1.7 ui-sans-serif, system-ui, "Inter", "Segoe UI", Roboto, Arial, sans-serif;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

img, svg, canvas, video {
  max-width:100%;
}

.container {
  max-width:1120px;
  margin-inline:auto;
  padding-inline:24px;
}

/* Nav */
.nav {
  position:sticky;
  top:0;
  z-index:40;
  backdrop-filter:saturate(120%) blur(8px);
  background:linear-gradient(to bottom, rgba(0,0,0,.88), rgba(0,0,0,.62));
  border-bottom:1px solid var(--border);
}

.nav .inner {
  display:flex;
  align-items:center;
  gap:20px;
  min-height:64px;
}

.logo {
  font-weight:800;
  letter-spacing:.16em;
  color:var(--ink);
  white-space:nowrap;
}

.nav-links {
  display:flex;
  gap:14px;
  align-items:center;
}

.nav a {
  color:var(--muted);
  text-decoration:none;
}

.nav a:hover {
  color:var(--ink);
}

.nav-link {
  color:var(--muted);
  text-decoration:none;
  font-weight:500;
  font-size:.95rem;
}

.nav-link.active,
.nav-current {
  color:var(--ink);
}

.nav-link.active {
  cursor:default;
}

.spacer {
  flex:1;
}

.cta {
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:10px 16px;
  border-radius:999px;
  background:var(--brand);
  color:var(--brand-ink) !important;
  font-weight:700;
  text-decoration:none;
  box-shadow:0 6px 22px rgba(198,167,255,.20);
}

.cta:hover {
  box-shadow:0 8px 28px rgba(198,167,255,.30);
}

/* Banner */
.banner {
  position:relative;
  isolation:isolate;
  overflow:clip;
  background:#000;
}

.banner x-song {
  display:block;
}

.brand {
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  pointer-events:none;
}

.brand h1 {
  margin:0;
  padding-inline:16px;
  text-align:center;
  font-weight:900;
  letter-spacing:.18em;
  color:var(--ink);
  font-size:clamp(28px, 6vw, 64px);
  -webkit-text-stroke:1px rgba(0,0,0,.35);
  text-shadow:0 0 1px #000, 0 0 28px rgba(0,0,0,.85);
}

.banner::after {
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:radial-gradient(60% 50% at 50% 50%, rgba(0,0,0,.22) 0%, rgba(0,0,0,0) 60%);
}

/* Main sections */
.hero {
  padding:56px 0;
}

.section-pad {
  padding-bottom:42px;
}

.section-pad-lg {
  padding-bottom:60px;
}

/* Card system */
.card {
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:14px;
  padding:18px;
  box-shadow:var(--shadow);
}

.card h3 {
  margin:0 0 8px;
  font-size:18px;
}

.card p {
  margin:0;
  color:var(--muted);
}

.grid {
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:18px;
}

/* Prose */
.prose {
  max-width:720px;
  margin-inline:auto;
  font-size:17px;
  line-height:1.75;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4,
.prose h5,
.prose h6 {
  color:var(--ink);
  line-height:1.2;
  font-weight:700;
}

.prose h1 {
  margin:0 0 10px;
  font-size:clamp(30px, 4vw, 46px);
  letter-spacing:-0.02em;
}

.prose h2 {
  margin:32px 0 14px;
  font-size:clamp(22px, 3vw, 32px);
}

.prose h3 {
  margin:28px 0 10px;
  font-size:1.24rem;
}

.prose h4 {
  margin:24px 0 8px;
  font-size:1rem;
}

.prose p {
  margin:0 0 20px;
  color:var(--ink);
}

.prose .lede,
.prose .muted,
.prose .meta {
  color:var(--muted);
}

.prose ul,
.prose ol {
  margin:0 0 20px;
  padding-left:22px;
  color:var(--ink);
}

.prose li + li {
  margin-top:8px;
}

.prose a {
  color:var(--brand);
  text-decoration:none;
}

.prose a:hover {
  text-decoration:underline;
}

.prose strong {
  color:var(--ink);
}

.prose blockquote {
  margin:0 0 22px;
  padding:14px 18px;
  border-left:3px solid var(--brand);
  background:rgba(255,255,255,.03);
  color:var(--ink);
}

.prose hr {
  border:0;
  border-top:1px solid var(--border);
  margin:32px 0;
}

.prose code {
  font:500 .92em/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.06);
  border-radius:8px;
  padding:.1em .38em;
}

.prose pre {
  margin:0 0 20px;
  padding:14px 16px;
  overflow-x:auto;
  border-radius:12px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.06);
}

.prose pre code {
  padding:0;
  border:0;
  background:transparent;
}

/* Utility */
.eyebrow {
  display:inline-block;
  margin:0 0 12px;
  padding:6px 10px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08);
  color:var(--ink);
  font-size:.9rem;
}

.pills {
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:14px;
}

.pill {
  padding:6px 10px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  color:var(--ink);
  border:1px solid rgba(255,255,255,.08);
}

.quote {
  margin:0 0 18px;
  padding:16px 18px;
  border-left:3px solid var(--brand);
  background:rgba(255,255,255,.03);
  color:var(--ink);
}

.code-block {
  margin:0 0 18px;
  padding:14px 16px;
  border-radius:12px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.06);
  overflow-x:auto;
}

.code-block code,
.code-block pre {
  margin:0;
  font:500 14px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color:var(--ink);
  white-space:pre-wrap;
}

.mini-grid,
.toc {
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:18px;
}

.toc {
  gap:12px;
  margin-top:18px;
}

.toc a {
  display:block;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.06);
  text-decoration:none;
  color:var(--muted);
}

.toc a:hover {
  color:var(--ink);
}

.tight {
  margin-bottom:10px;
}

.subtle-link {
  color:var(--brand);
  text-decoration:none;
}

.subtle-link:hover {
  text-decoration:underline;
}

/* Footer */
footer {
  margin-top:60px;
  border-top:1px solid var(--border);
  padding:28px 0;
  color:var(--muted);
}

/* Accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline:3px solid var(--ring);
  outline-offset:3px;
  border-radius:8px;
}

/* Responsive */
@media (max-width:900px) {
  .grid {
    grid-template-columns:1fr 1fr;
  }
}

@media (max-width:860px) {
  .mini-grid,
  .toc {
    grid-template-columns:1fr;
  }
}

@media (max-width:620px) {
  .grid {
    grid-template-columns:1fr;
  }

  .nav .inner {
    min-height:56px;
  }

  .container {
    padding-inline:18px;
  }

  .hero {
    padding:42px 0;
  }

  .prose {
    font-size:16px;
  }
}