:root {
  --accent: #0B7F73;
  --accent-soft: #E3F4F1;
  --bg: #F7F8F8;
  --surface: #FFFFFF;
  --line: #E4E6E7;
  --text: #0D1214;
  --muted: #5A6468;
  --faint: #8C969A;
  --safe: #1B8A4B;
  --caution: #B4740A;
  --radius: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #2BC9B4;
    --accent-soft: #11332F;
    --bg: #0B0D0D;
    --surface: #16191A;
    --line: #2A2E30;
    --text: #F4F6F6;
    --muted: #9BA5A9;
    --faint: #6B7478;
    --safe: #3FCB7C;
    --caution: #F0A93B;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 720px; margin: 0 auto; padding: 0 24px; }

header {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.brand {
  font-weight: 650;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
  font-size: 17px;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  margin-left: 20px;
}

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

main { padding: 64px 0 24px; }

h1 {
  font-size: clamp(32px, 6vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  font-weight: 680;
  margin-bottom: 20px;
}

h2 {
  font-size: 20px;
  letter-spacing: -0.01em;
  margin: 44px 0 14px;
  font-weight: 640;
}

h3 { font-size: 16px; margin: 24px 0 6px; font-weight: 620; }

p { color: var(--muted); margin-bottom: 16px; }

.lead { font-size: 19px; color: var(--muted); margin-bottom: 32px; }

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

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 14px;
}

.card h3 { margin-top: 0; color: var(--text); }
.card p:last-child { margin-bottom: 0; }

.cta {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 14px 26px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
}

.cta:hover { opacity: 0.9; }

.note {
  font-size: 14px;
  color: var(--faint);
  margin-top: 12px;
}

.pill {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}

ul { color: var(--muted); margin: 0 0 16px 20px; }
li { margin-bottom: 8px; }

.price-grid { display: grid; gap: 14px; grid-template-columns: 1fr 1fr; }
@media (max-width: 560px) { .price-grid { grid-template-columns: 1fr; } }

.price { font-size: 28px; font-weight: 650; color: var(--text); letter-spacing: -0.02em; }
.price small { font-size: 15px; font-weight: 400; color: var(--faint); }

.free-tag { color: var(--safe); font-weight: 600; font-size: 14px; }

footer {
  border-top: 1px solid var(--line);
  margin-top: 72px;
  padding: 28px 0 56px;
  font-size: 14px;
  color: var(--faint);
}

footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--accent); }

.updated { font-size: 14px; color: var(--faint); margin-bottom: 32px; }