:root {
  color-scheme: dark;
  --background: #080910;
  --background-soft: #0e1020;
  --surface: rgba(19, 22, 42, 0.88);
  --surface-hover: rgba(29, 34, 62, 0.95);
  --text: #eef0ff;
  --muted: #9aa2c7;
  --subtle: #6f77a0;
  --border: rgba(153, 166, 255, 0.18);
  --accent: #9ba7ff;
  --accent-strong: #c2caff;
  --focus: #dbe0ff;
}

* { box-sizing: border-box; }

html { background: var(--background); }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 50% -12%, #20264c 0, var(--background-soft) 34rem, var(--background) 72rem),
    var(--background);
  color: var(--text);
  font: 17px/1.62 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover { color: #ffffff; }

a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
  border-radius: 4px;
}

.shell {
  width: min(820px, calc(100% - 40px));
  margin: 0 auto;
  padding: 64px 0 36px;
}

.hero,
.prose {
  border: 1px solid var(--border);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(30, 35, 66, 0.86), var(--surface));
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.28);
}

.hero { padding: clamp(28px, 7vw, 58px); }

.prose { padding: clamp(26px, 6vw, 54px); }

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2 {
  line-height: 1.12;
  letter-spacing: -0.04em;
}

h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(2.6rem, 9vw, 5.4rem);
}

h2 {
  margin: 2.4rem 0 0.7rem;
  font-size: clamp(1.35rem, 3vw, 1.7rem);
}

p { margin: 1rem 0 0; }

.lede {
  max-width: 60ch;
  margin-top: 24px;
  color: var(--text);
  font-size: clamp(1.08rem, 2.6vw, 1.3rem);
}

.muted { color: var(--muted); }

.hero > .muted { max-width: 62ch; margin-top: 18px; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: 0 4px 22px;
}

.brand {
  color: var(--text);
  font-size: 1rem;
  font-weight: 800;
  text-decoration: none;
}

.current-page {
  color: var(--subtle);
  font-size: 0.9rem;
}

.page-links {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.page-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 24px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.page-link:hover {
  transform: translateY(-2px);
  border-color: rgba(194, 202, 255, 0.42);
  background: var(--surface-hover);
  color: var(--text);
}

.page-link-copy {
  display: grid;
  gap: 3px;
}

.page-link strong { font-size: 1.08rem; }

.page-link-copy span {
  color: var(--muted);
  font-size: 0.94rem;
}

.arrow {
  flex: 0 0 auto;
  color: var(--accent);
  font-size: 1.4rem;
}

.callout {
  margin: 28px 0 8px;
  padding: 22px;
  border: 1px solid rgba(155, 167, 255, 0.3);
  border-radius: 20px;
  background: rgba(155, 167, 255, 0.08);
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 16px;
  border-radius: 14px;
  background: linear-gradient(180deg, var(--accent-strong), var(--accent));
  color: #080910;
  font-weight: 800;
  text-decoration: none;
}

.button:hover { color: #080910; filter: brightness(1.08); }

.prose > p,
.prose > h2 { max-width: 72ch; }

.prose h1 { max-width: 18ch; }

.prose .muted { margin-top: 14px; }

.inline-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 42px;
  padding-top: 22px;
  border-top: 1px solid rgba(153, 166, 255, 0.14);
}

footer {
  padding: 24px 4px;
  color: var(--subtle);
  font-size: 0.9rem;
}

@media (max-width: 560px) {
  .shell { width: min(100% - 28px, 820px); padding-top: 28px; }
  .hero, .prose { border-radius: 22px; }
  .page-link { padding: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-link { transition: none; }
}