:root {
  --text: #1a1a1a;
  --text-muted: #6b6b6b;
  --bg: #ffffff;
  --bg-alt: #f7f6f3;
  --border: #e6e4df;
  --accent-bg: #1a1a1a;
  --accent-bg-hover: #000000;
  --radius: 6px;
  --max-width: 680px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
               Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 24px 24px;
}

.hero { margin-bottom: 64px; }

.hero h1 {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}

.hero .tagline {
  font-size: 18px;
  color: var(--text-muted);
  margin: 0;
  max-width: 560px;
}

section { margin-bottom: 56px; }

section h2 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

section h3 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin: 32px 0 12px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
}

.for-me {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 8px;
}

.for-me ul {
  margin: 0;
}

.for-me-label {
  font-weight: 600;
  margin: 0 0 8px;
}

.for-me-yes { color: #2f7a2f; }
.for-me-no { color: #9a4040; }

p { margin: 0 0 16px; }
p:last-child { margin-bottom: 0; }

ul {
  padding-left: 20px;
  margin: 0 0 20px;
}

li { margin-bottom: 6px; }

a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

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

.button {
  display: inline-block;
  margin-top: 12px;
  padding: 12px 22px;
  background: var(--accent-bg);
  color: var(--bg);
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 500;
  transition: background 0.15s ease;
}

.button:hover {
  background: var(--accent-bg-hover);
  color: var(--bg);
}

.product-tagline {
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 16px;
}

.badge {
  display: inline-block;
  margin-left: 8px;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  vertical-align: middle;
}

footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 24px 64px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 14px;
}

footer p { margin: 0; }
footer a { color: var(--text-muted); }

@media (max-width: 520px) {
  main { padding: 48px 20px 24px; }
  .hero { margin-bottom: 48px; }
  .hero h1 { font-size: 28px; }
  .hero .tagline { font-size: 16px; }
  section { margin-bottom: 44px; }
  section h2 { font-size: 20px; }
  section h3 { font-size: 16px; margin-top: 28px; }
  body { font-size: 16px; }
  .for-me { grid-template-columns: 1fr; gap: 8px; }
}