:root {
  color-scheme: light dark;
  --background: #f6f7f8;
  --surface: rgba(255, 255, 255, 0.82);
  --text: #17201e;
  --muted: #65716d;
  --accent: #35c99a;
  --border: rgba(23, 32, 30, 0.12);
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #101514;
    --surface: rgba(29, 39, 36, 0.9);
    --text: #f1f5f3;
    --muted: #aebbb6;
    --border: rgba(241, 245, 243, 0.14);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  line-height: 1.65;
}

main {
  width: min(720px, calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0 80px;
}

.brand {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  margin: 12px 0 12px;
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

h2 {
  margin: 36px 0 8px;
  font-size: 1.35rem;
  line-height: 1.25;
}

p, li { color: var(--muted); }

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

.card {
  margin-top: 32px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(18px);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
}

nav a {
  display: inline-block;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  text-decoration: none;
}

footer {
  margin-top: 40px;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 560px) {
  main { padding-top: 44px; }
  .card { padding: 22px; }
}