:root {
  --bg: #fbfbfd; --fg: #1b1f2a; --muted: #5d6578; --card: #ffffff; --line: #e3e6ef;
  --accent: #5b6cff; --accent-ink: #ffffff; --ok: #17a673;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14161d; --fg: #eef0f5; --muted: #9aa3b5; --card: #1d2029; --line: #2e3342; --accent: #7b88ff; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }

header.top { border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
.brand { font-weight: 800; font-size: 18px; color: var(--fg); text-decoration: none; letter-spacing: -.2px; }
.brand span { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 16px; font-size: 15px; }
nav a:first-child { margin-left: 0; }
nav a:hover { color: var(--fg); }

.hero { padding: 56px 0 24px; }
.hero h1 { font-size: clamp(30px, 5vw, 44px); line-height: 1.15; margin: 0 0 12px; letter-spacing: -.5px; }
.hero p { color: var(--muted); font-size: 18px; margin: 0; max-width: 620px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 24px; margin: 24px 0; }
.product { display: grid; grid-template-columns: 72px 1fr; gap: 18px; align-items: start; }
.product img { width: 72px; height: 72px; border-radius: 16px; }
.product h2 { margin: 0 0 6px; font-size: 22px; }
.product p { margin: 0 0 12px; color: var(--muted); }
ul.features { margin: 0 0 16px; padding-left: 20px; }
ul.features li { margin: 4px 0; }
.price { display: flex; gap: 10px; flex-wrap: wrap; margin: 0 0 16px; }
.pill { border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font-size: 14px; }
.pill.ok { border-color: var(--ok); color: var(--ok); }
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); text-decoration: none; font-weight: 600;
  padding: 10px 18px; border-radius: 10px; }
.btn.soon { opacity: .6; pointer-events: none; }

.doc { padding: 40px 0; }
.doc h1 { font-size: 30px; margin: 0 0 4px; }
.doc h2 { font-size: 20px; margin-top: 28px; }
.muted { color: var(--muted); font-size: 14px; }

footer { border-top: 1px solid var(--line); margin-top: 48px; }
footer .wrap { padding-top: 20px; padding-bottom: 32px; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); }

@media (max-width: 520px) {
  .product { grid-template-columns: 1fr; }
  nav a { margin-left: 12px; }
}