:root {
  --bg: #f7f7f2;
  --surface: #ffffff;
  --border: #d1d1c7;
  --text: #2e2e2e;
  --text-2: #6b6b6b;
  --accent: #4f7557;
  --on-accent: #ffffff;
  --danger: #a3412f;
  --radius: 14px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #20221f;
    --surface: #30332e;
    --border: #5e6359;
    --text: #f0f1eb;
    --text-2: #bdc2b7;
    --accent: #a3c7a4;
    --on-accent: #202a21;
    --danger: #e29a8a;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 640px; }

header.site { padding: 22px 0; }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 600; font-size: 18px; }
.brand img { width: 28px; height: 28px; }
nav.site { display: flex; gap: 18px; font-size: 15px; }
nav.site a { color: var(--text-2); text-decoration: none; }
nav.site a:hover { color: var(--text); }

main { padding: 24px 0 64px; }
h1 { font-size: clamp(32px, 6vw, 48px); line-height: 1.1; letter-spacing: -0.02em; margin: 24px 0 16px; }
h2 { font-size: 26px; letter-spacing: -0.01em; margin: 48px 0 12px; }
h3 { font-size: 19px; margin: 0 0 6px; }
.lede { font-size: 20px; color: var(--text-2); max-width: 36em; }
.muted { color: var(--text-2); }
.small { font-size: 14px; }

.button {
  display: inline-block; border: 0; border-radius: 999px; padding: 12px 22px; font: inherit; font-weight: 600;
  background: var(--accent); color: var(--on-accent); text-decoration: none; cursor: pointer;
}
.button.secondary { background: transparent; color: var(--accent); box-shadow: inset 0 0 0 1.5px var(--accent); }
.button[disabled] { opacity: 0.55; cursor: default; }

.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.card.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.price { font-size: 32px; font-weight: 700; letter-spacing: -0.02em; margin: 6px 0 2px; }
.card ul { padding-left: 18px; margin: 12px 0 0; }
.card li { margin: 4px 0; }

form { display: grid; gap: 14px; margin-top: 20px; }
label { display: grid; gap: 6px; font-weight: 600; font-size: 15px; }
input {
  font: inherit; padding: 11px 13px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text);
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.key {
  font: 600 clamp(18px, 5vw, 26px)/1.3 ui-monospace, "SF Mono", Menlo, monospace; letter-spacing: 0.04em;
  background: var(--surface); border: 1px dashed var(--accent); border-radius: var(--radius); padding: 18px;
  text-align: center; user-select: all; overflow-wrap: anywhere;
}
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.notice { border-left: 3px solid var(--accent); padding: 4px 0 4px 14px; color: var(--text-2); }
.error { color: var(--danger); }
.hidden { display: none !important; }

.legal h2 { font-size: 21px; margin-top: 32px; }
.draft { background: var(--surface); border: 1px dashed var(--danger); border-radius: 10px; padding: 10px 14px; font-size: 14px; }

footer.site { border-top: 1px solid var(--border); padding: 24px 0 40px; font-size: 14px; color: var(--text-2); }
footer.site .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
footer.site nav { display: flex; flex-wrap: wrap; gap: 16px; }
footer.site a { color: var(--text-2); }