:root {
  --brand: #7c3aed;
  --brand-ink: #5b21b6;
  --bg: #f6f3ff;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: #ffffff;
  --text: #1f2430;
  --muted: #5e6472;
  --line: rgba(124, 58, 237, 0.16);
  --shadow: 0 20px 60px rgba(31, 24, 60, 0.12);
  --radius: 24px;
  --content: 840px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(124, 58, 237, 0.12), transparent 34%),
    radial-gradient(circle at top right, rgba(124, 58, 237, 0.08), transparent 28%),
    linear-gradient(180deg, #fcfbff 0%, var(--bg) 100%);
  line-height: 1.65;
}

a {
  color: var(--brand);
  text-underline-offset: 0.15em;
  text-decoration-thickness: 0.08em;
}

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

code {
  font: inherit;
  background: rgba(124, 58, 237, 0.08);
  border-radius: 999px;
  padding: 0.1rem 0.35rem;
}

.page-shell {
  min-height: 100vh;
  padding: 28px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-header,
.page-footer,
.page-main {
  width: min(100%, var(--content));
  margin: 0 auto;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--text);
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: #ffffff;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, var(--brand), #a855f7);
  box-shadow: 0 14px 30px rgba(124, 58, 237, 0.25);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-name {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-tag {
  color: var(--muted);
  font-size: 0.92rem;
}

.page-main {
  display: block;
}

.page-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(24px, 4vw, 38px);
  backdrop-filter: blur(14px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(124, 58, 237, 0.1);
  color: var(--brand-ink);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
p,
ul,
ol,
details {
  margin-top: 0;
}

h1 {
  margin: 16px 0 12px;
  font-size: clamp(2.1rem, 4vw, 3.25rem);
  line-height: 1.07;
  letter-spacing: -0.04em;
}

h2 {
  margin: 28px 0 12px;
  font-size: 1.15rem;
  line-height: 1.25;
}

p,
li {
  color: var(--muted);
  font-size: 1rem;
}

p + p,
p + ul,
ul + p,
ul + ul {
  margin-top: 14px;
}

ul {
  padding-left: 1.2rem;
}

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

.meta {
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 0.95rem;
}

details {
  border: 1px solid rgba(124, 58, 237, 0.15);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.7);
  padding: 16px 18px;
  box-shadow: 0 8px 24px rgba(31, 24, 60, 0.05);
}

details + details {
  margin-top: 12px;
}

summary {
  cursor: pointer;
  list-style: none;
  color: var(--text);
  font-weight: 700;
}

summary::-webkit-details-marker {
  display: none;
}

.answer {
  margin-top: 10px;
}

.page-footer {
  padding-bottom: 4px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  padding: 0 6px;
}

.footer-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(124, 58, 237, 0.16);
  background: rgba(255, 255, 255, 0.75);
  box-shadow: 0 8px 24px rgba(31, 24, 60, 0.05);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
}

.footer-nav a:hover {
  background: rgba(124, 58, 237, 0.1);
}

@media (max-width: 640px) {
  .page-shell {
    padding-inline: 14px;
    gap: 14px;
  }

  .page-header {
    justify-content: center;
  }

  .brand {
    gap: 12px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
  }

  .footer-nav {
    justify-content: flex-start;
  }
}