:root {
  --bg: #fbfbfa;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #5d6470;
  --border: #e4e6ea;
  --accent: #3b5bdb;
  --accent-contrast: #ffffff;
  --success: #2b8a3e;
  --danger: #c92a2a;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 4px 16px rgba(16, 24, 40, 0.06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a21;
    --text: #eceef2;
    --muted: #9aa3b2;
    --border: #2a2f3a;
    --accent: #7b93ff;
    --accent-contrast: #0f1115;
    --success: #69db7c;
    --danger: #ff8787;
    --shadow: none;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
header.site { border-bottom: 1px solid var(--border); background: var(--surface); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.brand { font-weight: 700; color: var(--text); letter-spacing: -0.01em; }
.brand span { color: var(--accent); }
nav.main { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; font-size: 15px; }
nav.main a { color: var(--muted); }
nav.main a.cta { color: var(--text); font-weight: 600; }
main { padding: 48px 0 72px; }
h1 { font-size: clamp(30px, 5vw, 44px); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 16px; }
h2 { font-size: 24px; letter-spacing: -0.01em; margin: 40px 0 12px; }
h3 { font-size: 18px; margin: 0 0 6px; }
p.lead { font-size: 19px; color: var(--muted); max-width: 680px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.card.highlight { border-color: var(--accent); }
.badge { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 999px; background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 42px; padding: 0 18px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font: inherit; font-weight: 600; cursor: pointer;
}
.btn:hover { text-decoration: none; filter: brightness(0.97); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); }
.btn.danger { color: var(--danger); }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }
.btn.block { width: 100%; }
.price { font-size: 34px; font-weight: 700; letter-spacing: -0.02em; }
.price small { font-size: 15px; font-weight: 500; color: var(--muted); }
ul.checks { list-style: none; padding: 0; margin: 14px 0 18px; }
ul.checks li { padding-left: 24px; position: relative; margin: 6px 0; }
ul.checks li::before { content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: 700; }
.toggle { display: inline-flex; border: 1px solid var(--border); border-radius: 999px; padding: 3px; background: var(--surface); }
.toggle button { border: 0; background: transparent; padding: 6px 16px; border-radius: 999px; font: inherit; color: var(--muted); cursor: pointer; }
.toggle button[aria-pressed="true"] { background: var(--accent); color: var(--accent-contrast); }
form.stack { display: grid; gap: 12px; max-width: 380px; }
input[type="email"], input[type="text"], input[inputmode="numeric"] {
  width: 100%; min-height: 44px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font: inherit;
}
input:focus-visible, .btn:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.notice { padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); margin: 12px 0; }
.notice.error { border-color: var(--danger); color: var(--danger); }
.notice.ok { border-color: var(--success); }
.meter { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; margin: 6px 0; }
.meter > i { display: block; height: 100%; background: var(--accent); }
table.list { width: 100%; border-collapse: collapse; font-size: 15px; }
table.list td, table.list th { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
footer.site { border-top: 1px solid var(--border); padding: 28px 0; color: var(--muted); font-size: 14px; }
footer.site .wrap { display: flex; gap: 18px; flex-wrap: wrap; justify-content: space-between; }
footer.site nav { display: flex; gap: 16px; flex-wrap: wrap; }
.prose { max-width: 760px; }
.prose h2 { font-size: 20px; }
.center { text-align: center; }
.hidden { display: none !important; }
.divider { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 14px; max-width: 380px; margin: 16px 0; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }
@media (max-width: 640px) {
  nav.main a:not(.cta):not(.keep) { display: none; }
  main { padding: 32px 0 56px; }
}