:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --text: #0f1a33;
  --muted: #56617a;
  --line: #dfe4ee;
  --accent: #0458a1;
  --accent-soft: #e2edf8;
  --btn: #0458a1;
  --btn-text: #ffffff;
  --radius: 14px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a1733;
    --surface: #102246;
    --text: #eef2fa;
    --muted: #9fb0cf;
    --line: #1e3461;
    --accent: #7cc0ff;
    --accent-soft: #16305e;
    --btn: #ffc23d;
    --btn-text: #0a1733;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

header.site { border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 700; font-size: 20px; letter-spacing: -0.02em; color: var(--text); text-decoration: none; }
.brand span { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 20px; font-size: 15px; }
nav a:hover { color: var(--text); }

main { padding: 56px 0 72px; }
h1 { font-size: clamp(30px, 6vw, 42px); line-height: 1.15; letter-spacing: -0.03em; margin: 0 0 16px; }
h2 { font-size: 22px; letter-spacing: -0.01em; margin: 44px 0 12px; }
h3 { font-size: 18px; margin: 28px 0 8px; }
.lead { font-size: 19px; color: var(--muted); margin: 0 0 32px; }
.small { font-size: 14px; color: var(--muted); }

.card {
  display: flex; gap: 20px; align-items: center;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; text-decoration: none; color: inherit;
  transition: border-color .15s;
}
.card:hover { border-color: var(--accent); }
.card h3 { margin: 0 0 4px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.icon {
  flex: none; width: 64px; height: 64px; border-radius: 16px;
  background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center;
}
.icon.lg { width: 88px; height: 88px; border-radius: 22px; margin-bottom: 20px; }

.btn {
  display: inline-block; background: var(--btn); color: var(--btn-text);
  padding: 12px 22px; border-radius: 999px; text-decoration: none; font-weight: 600;
}

ul.features { padding-left: 20px; }
ul.features li { margin: 6px 0; }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.plan h3 { margin-top: 0; }
.plan ul { padding-left: 18px; margin: 0; }

.doc h2 { border-top: 1px solid var(--line); padding-top: 28px; }
.doc table { width: 100%; border-collapse: collapse; font-size: 15px; }
.doc td, .doc th { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.lang-switch { font-size: 15px; margin-bottom: 24px; }
.todo { background: #ffe8a3; color: #5a3f00; padding: 0 4px; border-radius: 4px; }

footer.site { border-top: 1px solid var(--line); padding: 28px 0 40px; font-size: 14px; color: var(--muted); }
footer.site a { color: var(--muted); margin-right: 16px; }

.icon img, .app-icon { display: block; width: 100%; height: 100%; border-radius: inherit; }
.icon.img { background: none; overflow: hidden; }
.cards { display: grid; gap: 14px; }
.tag { display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 1px 8px; margin-left: 8px; vertical-align: 2px; }