:root {
  --green-dark: #0f9d58;
  --green: #17a862;
  --green-light: #7dd8ab;
  --ink: #14171a;
  --muted: #5b6570;
  --bg: #ffffff;
  --bg-soft: #f5f9f7;
  --border: #e7ece9;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
.nav {
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 32px;
  height: 32px;
}

.brand-name {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.02em;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: opacity 0.15s ease;
}

.btn:hover {
  opacity: 0.85;
}

.btn-primary {
  background: var(--green);
  color: #fff;
}

.btn-ghost {
  color: var(--ink);
  border: 1px solid var(--border);
}

/* Hero */
.hero {
  background: var(--bg-soft);
}

.hero-inner {
  text-align: center;
  padding: 96px 24px 80px;
}

.hero-logo {
  width: 88px;
  height: 88px;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: 44px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

.subtitle {
  color: var(--muted);
  font-size: 18px;
  max-width: 520px;
  margin: 0 auto 32px;
}

.cta-row {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.cta-row .btn[aria-disabled="true"] {
  opacity: 0.6;
  cursor: default;
  pointer-events: none;
}

/* Features */
.features {
  padding: 72px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature {
  text-align: center;
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.feature h3 {
  font-size: 18px;
  margin: 0 0 8px;
}

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

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 14px;
}

.footer-inner a {
  color: var(--muted);
  text-decoration: none;
}

.footer-inner a:hover {
  color: var(--ink);
}

.footer-links {
  display: flex;
  gap: 20px;
}

/* Legal pages */
.legal {
  padding: 64px 0 80px;
}

.legal .container {
  max-width: 720px;
}

.legal h1 {
  font-size: 34px;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.legal .updated {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 40px;
}

.legal h2 {
  font-size: 20px;
  margin: 40px 0 12px;
}

.legal p, .legal li {
  color: var(--muted);
  font-size: 16px;
}

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

.legal a {
  color: var(--green-dark);
}

@media (max-width: 640px) {
  .footer-inner { flex-direction: column; gap: 12px; align-items: flex-start; }
}

@media (max-width: 640px) {
  .hero h1 { font-size: 32px; }
  .features-grid { grid-template-columns: 1fr; gap: 40px; }
}