:root {
  --bg: #faf8f4;
  --surface: #ffffff;
  --ink: #1f1b16;
  --muted: #6b6459;
  --accent: #7a5c3e;
  --accent-ink: #ffffff;
  --border: #e7e0d5;
  --maxw: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17140f;
    --surface: #201c16;
    --ink: #f2ece2;
    --muted: #a89e8f;
    --accent: #c8a06f;
    --accent-ink: #17140f;
    --border: #322c23;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

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;
}

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

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

header.site {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
nav a { margin-left: 20px; color: var(--muted); font-size: 15px; }

.hero {
  text-align: center;
  padding: 72px 0 40px;
}
.hero .app-icon {
  width: 112px;
  height: 112px;
  border-radius: 24px;
  margin: 0 auto 24px;
  display: block;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
}
.hero h1 {
  font-size: 44px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.hero p.tagline {
  font-size: 20px;
  color: var(--muted);
  margin: 0 auto 32px;
  max-width: 34ch;
}

.badge {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 12px;
}
.badge:hover { text-decoration: none; opacity: 0.92; }
.note { font-size: 14px; color: var(--muted); margin-top: 12px; }

section { padding: 24px 0; }
h2 { font-size: 24px; letter-spacing: -0.01em; margin: 32px 0 12px; }
h3 { font-size: 18px; margin: 24px 0 6px; }

.features {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  display: grid;
  gap: 14px;
}
.features li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
}
.features li strong { display: block; margin-bottom: 2px; }
.features li span { color: var(--muted); font-size: 15px; }

.content { padding: 40px 0 24px; }
.content p, .content li { color: var(--ink); }
.content .muted { color: var(--muted); }
.content ul { padding-left: 22px; }
.content li { margin: 6px 0; }

footer.site {
  border-top: 1px solid var(--border);
  margin-top: 56px;
  padding: 28px 0;
  color: var(--muted);
  font-size: 14px;
}
footer.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  justify-content: space-between;
  align-items: center;
}
footer.site a { color: var(--muted); }

@media (max-width: 520px) {
  .hero { padding: 48px 0 28px; }
  .hero h1 { font-size: 34px; }
}