:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #6b7280;
  --line: #e7e7e7;
  --soft: #fafafa;
  --accent: #111111;
  --accent-fg: #ffffff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
}

.logo {
  font-weight: 600;
  letter-spacing: -0.01em;
  font-size: 17px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  color: var(--muted);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  background: var(--accent);
  color: var(--accent-fg);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  transition: opacity 0.15s ease;
}

.btn:hover { opacity: 0.85; color: var(--accent-fg); }

.btn-lg {
  padding: 13px 22px;
  font-size: 15px;
}

.hero {
  padding: 96px 24px 88px;
  text-align: left;
}

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(34px, 4.5vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 720px;
}

.hero .sub {
  margin: 0 0 36px;
  color: var(--muted);
  font-size: 17px;
  max-width: 600px;
}

.section {
  padding: 72px 24px;
  border-top: 1px solid var(--line);
}

.section h2 {
  margin: 0 0 8px;
  font-size: 26px;
  letter-spacing: -0.01em;
}

.section-sub {
  margin: 0 0 36px;
  color: var(--muted);
  font-size: 15px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: var(--soft);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.plan {
  max-width: 380px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 28px;
  background: var(--soft);
}

.plan-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 22px;
}

.plan-name {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.plan-price strong {
  font-size: 32px;
  letter-spacing: -0.02em;
}

.plan-price span {
  color: var(--muted);
  font-size: 14px;
}

.plan-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  font-size: 14px;
  color: var(--fg);
}

.plan-list li {
  padding: 9px 0;
  border-top: 1px solid var(--line);
}

.plan-list li:first-child { border-top: 0; padding-top: 0; }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  margin-top: 32px;
  font-size: 13px;
  color: var(--muted);
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 22px;
}

.footer-links a:hover { color: var(--fg); }

.legal {
  padding: 56px 0 88px;
}

.legal h1 {
  font-size: 32px;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
}

.legal .updated {
  margin: 0 0 32px;
  color: var(--muted);
  font-size: 14px;
}

.legal h2 {
  font-size: 17px;
  margin: 32px 0 10px;
  letter-spacing: -0.01em;
}

.legal p, .legal li {
  font-size: 15px;
  color: var(--fg);
  line-height: 1.65;
}

.legal ul {
  padding-left: 20px;
}

.legal a {
  color: var(--fg);
  text-decoration: underline;
}

.back {
  display: inline-block;
  margin-top: 40px;
  font-size: 14px;
  color: var(--muted);
}

.back:hover { color: var(--fg); }

@media (max-width: 720px) {
  .grid-3 { grid-template-columns: 1fr; }
  .nav-right a:not(.btn) { display: none; }
  .hero { padding: 64px 24px 56px; }
  .section { padding: 56px 24px; }
  .footer-row { flex-direction: column; align-items: flex-start; }
}