:root {
  --primary: #2563eb;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --bg: #f8fafc;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 32px 20px 80px; }
header.site {
  border-bottom: 1px solid var(--border);
  background: #fff;
}
header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
}
header.site a.brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--primary);
  text-decoration: none;
}
header.site nav a {
  margin-left: 18px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}
header.site nav a:hover { color: var(--primary); }
h1 { font-size: 30px; line-height: 1.25; margin: 0 0 8px; }
h2 { font-size: 19px; margin: 32px 0 8px; }
p, li { font-size: 15px; }
.lead { font-size: 17px; color: var(--muted); }
.muted { color: var(--muted); font-size: 13px; }
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin: 16px 0;
}
.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 12px 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: #1d4ed8; }
.btn.secondary { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 4px; }
input, select {
  width: 100%;
  padding: 11px 12px;
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}
.plan {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.plan .price { font-size: 22px; font-weight: 700; }
.plan .price small { font-size: 13px; color: var(--muted); font-weight: 400; }
table { width: 100%; border-collapse: collapse; margin: 12px 0; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); font-size: 15px; }
th { font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.notice {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14px;
}
.error { color: #dc2626; font-size: 14px; margin-top: 10px; }
footer.site {
  border-top: 1px solid var(--border);
  margin-top: 48px;
  padding: 24px 0;
  color: var(--muted);
  font-size: 13px;
}
footer.site a { color: var(--muted); margin-right: 16px; }