:root {
  --ink: #1a1a2e;
  --muted: #5c5c72;
  --brand: #6c3ce9;
  --brand-dark: #552fba;
  --bg: #f7f6fb;
  --card: #ffffff;
  --line: #e6e3f0;
  --ok: #1a7f4e;
  --bad: #b3261e;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}
.wrap { max-width: 1000px; margin: 0 auto; padding: 0 20px; }
header.site {
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between; height: 60px;
}
.logo { font-weight: 800; font-size: 20px; color: var(--brand); text-decoration: none; }
.logo span { color: var(--ink); }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a.cta, .btn {
  display: inline-block; background: var(--brand); color: #fff !important;
  padding: 9px 18px; border-radius: 8px; border: 0; font-size: 15px;
  font-weight: 600; cursor: pointer; text-decoration: none;
}
.btn:hover { background: var(--brand-dark); }
.btn.secondary { background: transparent; color: var(--brand) !important; border: 1px solid var(--brand); }
.btn:disabled { opacity: 0.5; cursor: default; }
.hero { text-align: center; padding: 70px 0 50px; }
.hero h1 { font-size: 40px; margin: 0 0 14px; letter-spacing: -0.5px; }
.hero p { color: var(--muted); font-size: 19px; max-width: 620px; margin: 0 auto 26px; }
.grid { display: grid; gap: 20px; }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 24px;
}
.card h3 { margin-top: 0; }
.price { font-size: 34px; font-weight: 800; margin: 6px 0; }
.price small { font-size: 15px; font-weight: 400; color: var(--muted); }
.card ul { padding-left: 18px; color: var(--muted); }
.section { padding: 44px 0; }
.section h2 { font-size: 28px; text-align: center; margin-bottom: 28px; }
pre.code {
  background: #17162b; color: #e8e6f5; padding: 18px; border-radius: 10px;
  overflow-x: auto; font-size: 13.5px; line-height: 1.5;
}
label { display: block; font-weight: 600; font-size: 14px; margin: 14px 0 4px; }
input[type="email"], input[type="password"], input[type="text"], input[type="url"], select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 15px; background: #fff;
}
.notice { padding: 12px 14px; border-radius: 8px; margin: 14px 0; font-size: 14.5px; }
.notice.ok { background: #e7f6ee; color: var(--ok); }
.notice.bad { background: #fdecea; color: var(--bad); }
.notice.info { background: #efeafd; color: var(--brand-dark); }
.keybox {
  font-family: ui-monospace, Menlo, monospace; background: #17162b; color: #9ef0b8;
  padding: 12px; border-radius: 8px; word-break: break-all; font-size: 14px;
}
table.usage { width: 100%; border-collapse: collapse; font-size: 14px; }
table.usage th, table.usage td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
footer.site { color: var(--muted); text-align: center; padding: 30px 0 40px; font-size: 14px; }
.result-img { max-width: 100%; border-radius: 10px; border: 1px solid var(--line); }
.muted { color: var(--muted); }
.stat { font-size: 30px; font-weight: 800; }
.hidden { display: none; }