:root {
  --bg: #ffffff;
  --surface: #f7f8fa;
  --text: #111827;
  --muted: #667085;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --max-width: 1080px;
  --radius: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a { color: inherit; }

.container {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 750;
  letter-spacing: -.02em;
}

.brand-mark {
  width: 32px;
  height: 32px;
  border: 2px solid var(--accent);
  border-radius: 8px;
  position: relative;
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  background: var(--accent);
  opacity: .18;
}

.brand-mark::before { width: 100%; height: 2px; top: 14px; left: 0; }
.brand-mark::after { width: 2px; height: 100%; left: 14px; top: 0; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 550;
}

.nav-links a:hover { color: var(--text); }

.hero {
  padding: 100px 0 90px;
  text-align: center;
}

.hero h1 {
  max-width: 760px;
  margin: 0 auto 20px;
  font-size: clamp(42px, 7vw, 68px);
  line-height: 1.03;
  letter-spacing: -.055em;
}

.hero p {
  max-width: 620px;
  margin: 0 auto 32px;
  color: var(--muted);
  font-size: 19px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 10px;
  background: var(--accent);
  color: white;
  text-decoration: none;
  font-weight: 650;
  border: 0;
  cursor: pointer;
  transition: background .15s ease, transform .15s ease;
}

.button:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

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

.section { padding: 80px 0; }

.section.alt { background: var(--surface); }

.section h2 {
  margin: 0 0 12px;
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: -.035em;
}

.section-lead {
  color: var(--muted);
  max-width: 680px;
  margin: 0 0 40px;
}

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

.card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: white;
}

.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); }

.page {
  padding: 72px 0 100px;
  max-width: 780px;
}

.page h1 {
  font-size: 48px;
  line-height: 1.1;
  letter-spacing: -.045em;
  margin: 0 0 16px;
}

.page .lead {
  color: var(--muted);
  font-size: 18px;
  margin-bottom: 44px;
}

.page h2 { margin-top: 44px; }

.welcome-card {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 36px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: white;
  box-shadow: 0 18px 50px rgba(16,24,40,.08);
}

.success-icon {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: #ecfdf3;
  color: #15803d;
  font-size: 30px;
}

.welcome-card h1 {
  margin: 0 0 14px;
  font-size: 42px;
  line-height: 1.1;
  letter-spacing: -.04em;
}

.welcome-card p {
  color: var(--muted);
  font-size: 17px;
  margin: 0 auto 28px;
  max-width: 520px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.price {
  font-size: 42px;
  font-weight: 750;
  letter-spacing: -.04em;
}

.price span {
  font-size: 15px;
  color: var(--muted);
  font-weight: 500;
}

ul.clean {
  padding-left: 20px;
  color: var(--muted);
}

.faq-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 650;
}

.faq-item p { color: var(--muted); }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 30px 0;
  color: var(--muted);
  font-size: 14px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--text); }

@media (max-width: 720px) {
  .container { width: min(calc(100% - 28px), var(--max-width)); }
  .nav { min-height: 60px; }
  .nav-links { gap: 12px; }
  .nav-links a:nth-child(-n+2) { display: none; }

  .hero { padding: 72px 0 64px; }
  .hero h1 { font-size: 44px; }
  .hero p { font-size: 17px; }

  .section { padding: 58px 0; }
  .grid, .pricing-grid { grid-template-columns: 1fr; }

  .page { padding: 52px 0 72px; }
  .page h1 { font-size: 40px; }

  .welcome-card { padding: 38px 22px; }
  .welcome-card h1 { font-size: 34px; }
}