:root {
  color-scheme: dark;
  --bg: #0E0F12;
  --surface: #17181C;
  --surface-alt: #141518;
  --accent-start: #6C5DE6;
  --accent-end: #5A4AD9;
  --accent-text: #8B7DF0;
  --text-primary: #F4F4F6;
  --text-secondary: rgba(255,255,255,0.62);
  --text-faint: rgba(255,255,255,0.42);
  --hairline: rgba(255,255,255,0.09);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.wordmark {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.wordmark span { color: var(--accent-text); }

.pillnav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.pillnav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 18px;
  border: 1px solid var(--hairline);
  background: var(--surface);
}
.pillnav a.active {
  color: #fff;
  background: var(--accent-end);
  border-color: var(--accent-end);
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 36px 20px 60px;
}

h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.lede {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 58ch;
  margin: 0 0 32px;
}

.meta {
  color: var(--text-faint);
  font-size: 13px;
  margin: -8px 0 28px;
}

.section-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin: 40px 0 14px;
}

h2 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 10px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 18px;
  padding: 22px 24px;
  margin-bottom: 8px;
}
.card h2 { margin-top: 0; }
.card p { margin: 0 0 8px; }
.card p:last-child { margin-bottom: 0; }

.muted { color: var(--text-secondary); font-size: 14px; }

.btn {
  display: inline-block;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 26px;
}

a { color: var(--accent-text); }

.faq { display: flex; flex-direction: column; gap: 10px; margin-bottom: 8px; }
.faq details {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  padding: 16px 18px;
}
.faq summary {
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  color: var(--accent-text);
  font-size: 20px;
  font-weight: 400;
  margin-left: 12px;
}
.faq details[open] summary::after { content: "–"; }
.faq p {
  color: var(--text-secondary);
  margin: 12px 0 0;
}

ul { color: var(--text-secondary); padding-left: 20px; }
ul li { margin-bottom: 8px; }
ul li b { color: var(--text-primary); }

footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px 40px;
  color: var(--text-faint);
  font-size: 13px;
  border-top: 1px solid var(--hairline);
  padding-top: 20px;
}

@media (max-width: 480px) {
  h1 { font-size: 26px; }
  .topbar { padding-top: 22px; }
}