:root {
  --bg: #ffffff;
  --fg: #16181d;
  --muted: #5f6672;
  --border: #e3e6eb;
  --card: #f6f7f9;
  --accent: #16181d;
  --accent-fg: #ffffff;
  --good: #067647;
  --bad: #b42318;
  --max: 960px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #eceef1;
    --muted: #9aa1ac;
    --border: #2a2e35;
    --card: #1c1f24;
    --accent: #eceef1;
    --accent-fg: #14161a;
    --good: #47cd89;
    --bad: #f97066;
  }
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light dark;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
}

a {
  color: inherit;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

header.site {
  border-bottom: 1px solid var(--border);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.brand img {
  width: 28px;
  height: 28px;
}

.brand small {
  font-weight: 500;
  letter-spacing: 0;
  color: var(--muted);
}

nav a {
  margin-left: 18px;
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
}

nav a:hover {
  color: var(--fg);
}

.hero {
  padding: 72px 0 56px;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 6vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero p {
  max-width: 620px;
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 19px;
}

.button {
  display: inline-block;
  padding: 12px 20px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-fg);
  font: inherit;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
}

.button.secondary {
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--border);
}

.button[aria-disabled="true"],
.button:disabled {
  opacity: 0.55;
  cursor: default;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

section {
  padding: 48px 0;
}

section h2 {
  margin: 0 0 24px;
  font-size: 28px;
  letter-spacing: -0.01em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
}

.card h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.price {
  font-size: 36px;
  font-weight: 800;
  margin: 8px 0 4px;
}

.price small {
  font-size: 16px;
  font-weight: 500;
  color: var(--muted);
}

.plan ul {
  margin: 12px 0 20px;
  padding-left: 20px;
  color: var(--muted);
}

.plan.featured {
  border-color: var(--good);
}

.note {
  color: var(--muted);
  font-size: 14px;
}

.legal {
  max-width: 720px;
  padding: 48px 0 64px;
}

.legal h1 {
  margin: 0 0 4px;
}

.legal h2 {
  margin: 32px 0 8px;
  font-size: 20px;
}

code {
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--card);
  border: 1px solid var(--border);
  font-size: 0.92em;
  word-break: break-all;
}

.key {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  margin: 12px 0;
}

.status-good {
  color: var(--good);
  font-weight: 600;
}

.status-bad {
  color: var(--bad);
  font-weight: 600;
}

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

footer.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
}

footer.site a {
  margin-right: 16px;
}