:root {
  --ink: #131517;
  --paper: #fffdf7;
  --muted: #56606c;
  --line: #e5e1d4;
  --accent: #d6442c;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

header, main, footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px;
}

footer {
  border-top: 1px solid var(--line);
  margin-top: 48px;
  color: var(--muted);
  font-size: 0.9rem;
}

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

h1 {
  font-size: 2.5rem;
  line-height: 1.1;
  margin: 24px 0 8px;
}
h2 {
  font-size: 1.4rem;
  margin: 32px 0 8px;
  border-top: 1px solid var(--line);
  padding-top: 32px;
}
h2:first-of-type { border-top: 0; padding-top: 0; }
h3 { margin: 0 0 6px; font-size: 1.1rem; }
p { margin: 12px 0; }
ul { padding-left: 1.25rem; }
code { font-family: ui-monospace, "SF Mono", Menlo, monospace; background: rgba(0,0,0,.06); padding: 0 4px; border-radius: 4px; }

.back { font-size: 0.95rem; color: var(--muted); text-decoration: none; }
.back:hover { color: var(--accent); }
.meta { color: var(--muted); font-size: 0.9rem; margin-top: 0; }

/* Home */
.home .hero {
  text-align: center;
  padding-top: 80px;
  padding-bottom: 32px;
}
.home .hero h1 { font-size: 3.5rem; margin-bottom: 8px; }
.home .tag {
  font-size: 1.6rem;
  font-weight: 600;
  margin: 0 0 12px;
}
.home .sub {
  max-width: 540px;
  margin: 0 auto 28px;
  color: var(--muted);
  font-size: 1.05rem;
}

.app-store-badge {
  display: inline-block;
  background: var(--ink);
  color: white;
  text-decoration: none;
  padding: 16px 28px;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.app-store-badge:hover { background: var(--accent); color: white; }

/* "Why" grid */
.why-grid {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 16px;
}
.why-grid li {
  background: white;
  border: 1px solid var(--line);
  padding: 18px;
  border-radius: var(--radius);
}
.why-grid p { margin: 0; color: var(--muted); font-size: 0.95rem; }

section { margin-top: 16px; }