:root {
  color-scheme: light dark;
  --ink: #11161d;
  --muted: #5a6472;
  --bg: #ffffff;
  --panel: #f4f6f9;
  --line: #e2e7ee;
  --accent: #ce1a22;
  --shield: #3a4e64;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef2f7;
    --muted: #9aa6b4;
    --bg: #0e141c;
    --panel: #182029;
    --line: #26313d;
    --shield: #4a627c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 44rem; margin: 0 auto; padding: 0 1.5rem; }

/* Header */
.top { padding: 4.5rem 0 3rem; text-align: center; }
.top img { width: 108px; height: 108px; border-radius: 24px; }
h1 { font-size: 2.6rem; line-height: 1.1; letter-spacing: -0.02em; margin: 1.25rem 0 0.5rem; }
.tagline { font-size: 1.2rem; color: var(--muted); margin: 0 auto; max-width: 30rem; }

/* Sections */
section { padding: 2.5rem 0; border-top: 1px solid var(--line); }
h2 { font-size: 1.35rem; letter-spacing: -0.01em; margin: 0 0 1rem; }
h3 { font-size: 1.05rem; margin: 1.75rem 0 0.35rem; }
p { margin: 0 0 1rem; }
a { color: inherit; text-decoration-color: var(--muted); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--ink); }

/* Feature grid */
.features { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.feature {
  background: var(--panel);
  border-radius: 14px;
  padding: 1.1rem 1.2rem;
}
.feature h3 { margin: 0 0 0.3rem; font-size: 1rem; }
.feature p { margin: 0; color: var(--muted); font-size: 0.95rem; }

/* Privacy callout */
.callout {
  background: var(--panel);
  border-left: 3px solid var(--shield);
  border-radius: 0 12px 12px 0;
  padding: 1.1rem 1.3rem;
}
.callout p:last-child { margin: 0; }

/* Policy body */
.policy h2 { margin-top: 2.5rem; }
.policy ul { padding-left: 1.2rem; }
.policy li { margin-bottom: 0.5rem; }
.updated { color: var(--muted); font-size: 0.95rem; }

/* Footer */
footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 3.5rem;
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.25rem;
}
footer a { color: var(--muted); }

.back { display: inline-block; margin-bottom: 1.5rem; color: var(--muted); font-size: 0.95rem; }

@media (max-width: 34rem) {
  .top { padding: 3rem 0 2rem; }
  h1 { font-size: 2.1rem; }
}