:root {
  --bg: #f5f5f6;
  --card: #ffffff;
  --ink: #2b2b2d;
  --muted: #6b6b72;
  --line: #e4e4e8;
  --accent: #9b7bf2;
  --accent-soft: #efe9fe;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f10;
    --card: #1c1c1e;
    --ink: #f0f0f2;
    --muted: #a1a1a8;
    --line: #2e2e32;
    --accent: #b7a2f6;
    --accent-soft: #2a2340;
  }
}
* { 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, "SF Pro Text", "Inter", "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
header.site {
  max-width: 880px;
  margin: 0 auto;
  padding: 24px 16px 0;
  display: flex;
  align-items: center;
  gap: 14px;
}
header.site img { width: 44px; height: 44px; border-radius: 11px; }
header.site .name { font-weight: 700; font-size: 19px; color: var(--ink); text-decoration: none; }
nav { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500; }
nav a[aria-current="page"], nav a:hover { color: var(--ink); }
main { max-width: 880px; margin: 0 auto; padding: 24px 16px 64px; }
.card {
  background: var(--card);
  border-radius: 24px;
  padding: 32px clamp(20px, 5vw, 48px);
  box-shadow: 0 1px 2px rgba(0,0,0,.03), 0 12px 40px rgba(0,0,0,.04);
}
h1 { font-size: clamp(32px, 6vw, 48px); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 12px; }
h2 { font-size: 22px; margin: 36px 0 8px; letter-spacing: -0.01em; }
p.lead { font-size: 19px; color: var(--muted); margin: 0 0 24px; }
.meta { color: var(--muted); font-size: 14px; }
.hero { text-align: center; padding: 40px 0 16px; }
.hero img { width: 112px; height: 112px; border-radius: 26px; box-shadow: 0 18px 40px rgba(0,0,0,.15); }
.price { display: inline-block; margin-top: 8px; padding: 6px 14px; border-radius: 999px; background: var(--accent-soft); color: var(--ink); font-weight: 600; font-size: 15px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 28px; }
.feature { background: var(--bg); border-radius: 18px; padding: 20px; }
.feature b { display: block; margin-bottom: 4px; }
.feature span { color: var(--muted); font-size: 15px; }
.button {
  display: inline-block; padding: 14px 22px; border-radius: 14px;
  background: var(--ink); color: var(--card); text-decoration: none; font-weight: 600;
}
ul { padding-left: 22px; }
li { margin: 6px 0; }
details { border-top: 1px solid var(--line); padding: 14px 0; }
details summary { cursor: pointer; font-weight: 600; }
footer { max-width: 880px; margin: 0 auto; padding: 0 16px 40px; color: var(--muted); font-size: 14px; display: flex; gap: 16px; flex-wrap: wrap; }
footer a { color: var(--muted); }