:root {
  --bg: #0b0b0d;
  --bg-elevated: #161618;
  --bg-card: #1c1c1f;
  --text: #f5f5f7;
  --text-secondary: #a1a1a6;
  --separator: rgba(255, 255, 255, 0.1);
  --accent: #9b7cff;
  --link: #c4b5fd;
  --ok: #34c759;
  --radius: 18px;
  --max: 720px;
  --brand: linear-gradient(135deg, #ff8c40 0%, #ed458c 34%, #8c52f2 68%, #3380ff 100%);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f5f7;
    --bg-elevated: #ffffff;
    --bg-card: #ffffff;
    --text: #1d1d1f;
    --text-secondary: #6e6e73;
    --separator: rgba(0, 0, 0, 0.08);
    --link: #5b3cc4;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 22px 80px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 48px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand:hover { text-decoration: none; }

.mark {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--brand);
  flex-shrink: 0;
}

nav { display: flex; gap: 18px; font-size: 15px; }

h1 {
  font-size: clamp(32px, 6vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.035em;
  font-weight: 700;
  margin: 0 0 12px;
}

.lede {
  color: var(--text-secondary);
  font-size: 19px;
  margin: 0 0 36px;
  max-width: 38rem;
}

h2 {
  font-size: 22px;
  letter-spacing: -0.02em;
  margin: 40px 0 14px;
}

p, li { color: var(--text-secondary); }
p { margin: 0 0 14px; }
ul { margin: 0 0 16px; padding-left: 1.15em; }
li { margin: 0 0 8px; }
strong { color: var(--text); font-weight: 600; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--separator);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin: 0 0 14px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  letter-spacing: -0.015em;
}

.card p:last-child { margin-bottom: 0; }

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--text);
  color: var(--bg);
  font-weight: 600;
  border-radius: 980px;
  padding: 12px 20px;
  margin: 8px 0 0;
}

.cta:hover { text-decoration: none; opacity: 0.9; }

.meta {
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--separator);
}

footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 28px;
  color: var(--text-secondary);
  font-size: 13px;
}