:root {
  --canvas: #000;
  --surface: rgba(255, 255, 255, 0.06);
  --stroke: rgba(255, 255, 255, 0.12);
  --ink: #fff;
  --ink-2: rgba(235, 235, 245, 0.6);
  --ink-3: rgba(235, 235, 245, 0.3);
  --accent: #0a84ff;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue",
    Helvetica, Arial, sans-serif;
  --display: -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--canvas);
  color: var(--ink);
  font: 17px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
}

/* The logo's own blues and pinks, blurred behind everything. */
.ambient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(40vmax 30vmax at 20% 10%, rgba(47, 110, 205, 0.35), transparent 70%),
    radial-gradient(35vmax 25vmax at 85% 30%, rgba(218, 130, 190, 0.22), transparent 70%),
    radial-gradient(30vmax 20vmax at 60% 95%, rgba(240, 200, 90, 0.12), transparent 70%);
  filter: blur(20px);
}

a { color: var(--ink); text-decoration-color: var(--ink-3); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--ink); }

/* ── Top bar ─────────────────────────────────────── */
.bar {
  position: sticky;
  top: 12px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 720px;
  margin: 12px auto 0;
  padding: 8px 8px 8px 12px;
  width: calc(100% - 32px);
  border: 0.5px solid var(--stroke);
  border-radius: 999px;
  background: rgba(28, 28, 30, 0.55);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  backdrop-filter: blur(24px) saturate(180%);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; }
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.bar nav { display: flex; gap: 4px; }
.bar nav a {
  padding: 6px 14px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-2);
  font-size: 15px;
}
.bar nav a:hover, .bar nav a[aria-current="page"] { color: var(--ink); background: var(--surface); }

/* ── Landing ─────────────────────────────────────── */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 12vh 16px 10vh;
}
.hero img {
  width: 148px;
  height: 148px;
  border-radius: 33px;
  box-shadow: 0 20px 60px rgba(47, 110, 205, 0.35), 0 0 0 0.5px var(--stroke);
}
.hero h1 {
  margin: 28px 0 8px;
  font: 700 clamp(40px, 8vw, 64px)/1.05 var(--display);
  letter-spacing: -0.02em;
}
.hero p { margin: 0; max-width: 30ch; color: var(--ink-2); font-size: 20px; }
.pill {
  display: inline-block;
  margin-top: 32px;
  padding: 12px 22px;
  border: 0.5px solid var(--stroke);
  border-radius: 999px;
  background: var(--surface);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  color: var(--ink);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
}

/* ── Documents ───────────────────────────────────── */
main.doc {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 16px 64px;
}
.doc h1 {
  margin: 0 0 6px;
  font: 700 clamp(34px, 6vw, 44px)/1.1 var(--display);
  letter-spacing: -0.02em;
}
.doc .meta { margin: 0 0 32px; color: var(--ink-3); font-size: 15px; }
.doc h2 {
  margin: 40px 0 10px;
  font: 600 22px/1.3 var(--display);
  letter-spacing: -0.01em;
}
.doc h3 { margin: 24px 0 6px; font-size: 17px; }
.doc p, .doc li { color: rgba(235, 235, 245, 0.82); }
.doc ul { padding-left: 1.2em; }
.doc li { margin: 4px 0; }
.doc strong { color: var(--ink); }

.card {
  margin: 20px 0;
  padding: 18px 20px;
  border: 0.5px solid var(--stroke);
  border-radius: 20px;
  background: var(--surface);
}
.card p { margin: 0; }
.card p + p { margin-top: 8px; }

details {
  border-bottom: 0.5px solid var(--stroke);
  padding: 14px 0;
}
details summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}
details summary::-webkit-details-marker { display: none; }
details summary::after { content: "+"; float: right; color: var(--ink-3); font-weight: 400; }
details[open] summary::after { content: "–"; }
details p { margin: 10px 0 0; }

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 40px;
  color: var(--ink-3);
  font-size: 13px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}
footer a { color: var(--ink-3); }

@media (max-width: 480px) {
  body { font-size: 16px; }
  .bar nav a { padding: 6px 10px; }
  .hero p { font-size: 18px; }
}